Blood treating device



Aug. 20, 1946. J p DESMET 2,406,207

BLOOD TREATING DEVICE Filed Oct. 4, 1944 2 Sheets-Sheet INVENTOR John PDesmefi ATTORNEYS Aug. 20, 1946; Y J DESMET 2,406,207

BLOOD TREATING DEVICE I Filed Oct. 4, '1944 2 Sheets-Sheet? Fig.2 rug .3

INYENTOR John PDesme zL mama;

ATTORNEYS 2,406,207 T? iii; 4,

"The outlet passage 2! of the pump is con the latter'an'd is there formed with an upturned relatively discharge gooseneck 33. Another small diameter glas tube 3| extends into the receptacle 12irom'exteriorly thereof through a packing gland 32; said tube 3i being-of substantial length and vertically adjustable through the] gland 32. @The tube 3! forms the outlet from the receptacle 2,, and when in/its lowermostpo; H H sition of adjustment terminates at its lowerend' l amount of blood Withdrawn at any one time from adjacent but short of the bottom o-ifsaid recep tacle2.-. A third glass tube 33 leads into the'rec 2 through a packing gland 34, and said tube 33 extends downwardly in receptacle 2 through a packing; gland 34 to adjacent the gooseneck iil l andisthere fitted witharubbernippleor sleeve; Whichseats against a filter screen 36 fric-Q V tionally engaged in receptacle 2 adjacent the I bottom thereof butf-belowthe lower end portions of tubes 28 andr3l. Above the packing gland the tube 32is connected ,witha flexible conduit 3i which,leads to an oxygen tank or the I like, indicated diagrammatically at 38; there being a control valve 39 the conduit 3? ate, convenient point.

Above theipackin g guild 32 the outlet tube s1 is connectedto a flexible conduit 40 which is of suffi'cient length to permit ofvertical adjustment of: said .tube 3| the fiexibleconduit 60 connecting ateitsother end with the upper end of a relatively small diameter glassinlet tube 4| which leads through a packinggland i fl into the upper end portion of the receptacle 3; A still further, relativelysmall-diameter, glass tube-;43 extends into the receptacle 3, 'toa pointadj'acent but short otthe. lower end thereof, where said tube '43. is formed with an upwardly opening goosee "necked. The tube l3xis the finm outlet from, the device and is connected with a flexible con-7 duit 45, 051 the outer end of which is fitteda transfusion type needle 4.6. .7 V Y Anadjustablecheck valve 4? is mounted on the head B and is in communicationwith thelinterior -of the receptacle 3, such check valve opening}; away from said receptacle. and including an ad-; 'justment screw 43 whereby the pressure in said 7 receptacle may be regulated as desired.

In use oi' the above described device, the needle 21 is introduced into the artery of the patient and :the pump I9 is started. This withdraws blood fromjsuch artery through the flexible can:

I l duit 26 to the pump. IE1 and thence into the inlet tube28. In order to prevent coagulationofthe blood the needle "21 i'sof the type which includes a lateral fitting 49 adapted to be connected with a feed conduit 58 whoseouter endi disposed in'a receptacle 5| filled with'a saline solution,

' Itwill thus be evident that as suction occurs in the flexible conduit 26 a certain amount of the saline solution will be drawn through conduit genating chamber, as previously stated. 1

As the blood flows into the receiving and, 9391 5 75 5 bubbles upwardly through the blood in the receptacle 2, effectively oxygenatingsaid blood and revitalizing the same.

From the receptacle 2 the oxygenated blood, which tends to be in a somewhat foamy condil0 tion, flows upwardly through conduit 6 and is ,discharged into the receptacle 3 th the el t tube 4!.

held inlthe receptacle 2, and consequently the the patient s' circulatory system. I

returnlthe oxygenated blood to the patient As into a vein of the'patient. u

Operation of the device is continuous, and tlif blood oxygenating process is relatively rapid; the

amount of blood withdrawn, its rate of fiow,'e'tc.,

0 being efiectively regulated throughthe medium of adjustable elements of the device, as previ ously described. 1 With my improved system of blood treatment,

the blood is purified and aeratedIandEhe blood 35 cells are materially revived by the introduction;

of oxygen or othersimilar gas into the blood.

The method is especially beneficial 'inIthe treatment of blood diseases and ior'einergencyuse in shock and'asphyxiation cases; theiblood act- 40 mg as a carrier of oxygen, and which oxygen pro "duces the desired beneficial results. 1

.Since the 'oxygeniirst ischarges throughithe screen 3'6 and then comes 'fromthe under side thereof back through the screnjin 'difiu'se'drela- 45 .tion,' itbecomes thoroughly mixed with the blood;

' A Whenthe oxygenization operation isconcluded the valves in the pump line'are closed. The pressure of the oxygen thenfcontinues to expel all the remaining blood from' the" apparatus and into 5 the circulatory system of theipatient method and apparatus canals of dry blood for purposes of transfusion iril cases I Shock a them. if P a m islneile eil b aif ,or in cases of anemia when deficiency oiQred;

"blood corpuscles is involved.

From theforegoing e r t en, t il fl lralt .i e n h le e r d eaeu hea m hod 11 and device as substantially iulfills the objects of; 60 the inventian as set I'orthherein.

While this specification ses forthindetailgthe present and preiferred construction of themethod i and device, still in practice such devations from such detail maybe resorted toras do notfiform ,a departure from the spirit of;theiinvention asj I defined by the appended claims, 1

Having thus described my invention, claim as new and useful and desire to secureby;

Letters Patent is: i V v V .1, ,Ablg d tr at ice m rising. a um avi an nta e and an ou et; a fiXi lecondui cqnnectedat o .endt t e ump intake an hay maze-tra fus n, n d e 1 the ther nd; a r ceptaclefgr g an encl osed chambeha cond The position of vertical-adjustment of the outlet 31 will control the amount of blood As the blood'discharges from inlet'tube 42 into"thelreceptacle 3 it tends to settle or deioamgandiin addition the check valve M is set 20 to regulatethekpressure at which it is desired to i 1 b i e-i tively used in the liquification and oxygenization Jii e PEPlR-Qllili means to introduce a gas into the chamber, another flexible conduit having a transfusion needle on its outer end, and means connecting said chamber and other conduit in communication; said last named means including another receptacle forming an enclosed blood-defoaming chamber, and a pressure regulating valve in communication with said other receptacle.

2. A device as in claim 1 in which both of said receptacles are of glass to permit visual determination of the quantity of blood therein.

3. A blood treating device'comprising a pair of vertically elongated receptacles, three rigid tubes projecting into one of the receptacles from above, a pump having an intake and an outlet, a flexible conduit connected at one end to the pump intake and having a transfusion needle at the other end, means connecting one of said tubes in connection with the pump outlet, a source of gas under pressure, means connecting the second of said tubes in valved communication with said source, two rigid tubes projecting into the other receptacle from above, means connecting the third tube of said one receptacle in communication with one tube of said other receptacle, another flexible conduit connected at one end in communication with the second tube and said other receptacle, and a transfusion needle on the end of said other flexible conduit.

4. A device as in claim 3 in which said one receptacle includes a filter therein adjacent its lower end; said second tube of said one receptacle extending downward therein to adjacent the filter and having a resilient sleeve thereon projecting into contact with the filter.

5. A blood treating device comprising a pair of vertically elongated receptacles, three rigid tubes projecting into one of the receptacles from above, a pump having an intake and an outlet, a flexible conduit connected at one end to the pump intake and having a transfusion needle at the other end, means connecting one of said tubes in connection with the pump outlet, a source of gas under pressure, means connecting the second of said tubes in valved communication with said source, two rigid tubes projecting into the other receptacle from above, means connecting the third tube of said one receptacle in communication with one tube of said other receptacle, another flexible conduit connected at one end in communication with the second tube and said other receptacle, and a transfusion needle on the end of said other flexible conduit; there being an adjustable pressure regulating valve in communication with said other receptacle.

6. A blood treating device comprising a pair of vertically elongated receptacles, three rigid tubes projecting into one of the receptacles from above, a pump having an intake and an outlet, a flexible conduit connected at one end to the pump intake and having a. transfusion needle at the other end, means connecting one of said tubes in con-.

nection with the pump outlet,'a source of gas under pressure, means connecting the second of said tubes in valved communication with said source, two rigid tubes projecting into the other receptacle from above, means connecting the third tube of said one receptacle in communication with one tube of said other. receptacle, another flexible conduit connected at one end in communication With the second tube and said other receptacle, and a transfusion needle on the end of said other flexible conduit; said first and second tubes of said one receptacle terminating adjacent the lower end of the latter, and said third tube being vertically adjustable.

7. A device as in claim 3 including a base, said vertically elongated receptacles upstanding from the base and being initially open at the open end, a removable head closing the upper end of each receptacle, said heads being connected in rigid relation by a cross member, a post upstanding from the base between the receptacles, and securing means between said post and cross member urging the latter in a downward direction.

receptacle forming an enclosed chamber, a filter extending across the receptacle at a spaced distance from the lower end thereof, a conduit leading from the pump outlet into the receptacle, a

source of gas under pressure, a conduit leading from such source into the receptacle and terminating immediately adjacent the filter whereby to discharge through the filter, a conduit leading from the receptacle, and a second'transfusion needle in communication with said last named conduit.

JOHN P. DESMET. 

